Answer Posted / ravi

Hydro power plamt

How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.

1755

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63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?

2681

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What are the operation carried out in thermal power station?

1003

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What is PEC??Applications........

1917

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I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1635

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In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.

1978

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What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?

1992

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please describe the Transformer setting, Motor setting, I/C setting, Tie setting

1727

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Type of motor stater detail and working detail

1620

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What is the maximum and minimum rating of UPS?

1434

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what do u understand from filter factor of reactor?

1914

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In Plumbing services What are accessories we consider for a bathroom?

1938

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What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

2220

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Merits & Demarits of Oil circuit & Air circuit breakers ?

2027

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explain with diagram how to protect transformers and substations from over current with help of CT's?

1889

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